Cisco Cisco Web Security Appliance S170 사용자 가이드

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I R O N P O R T   A S Y N C O S   6 . 3   F O R   W E B   U S E R   G U I D E  

Note — IronPort recommends changing the update and upgrade settings to use the IronPort 
update servers (using dynamic or static addresses) after the upgrade is complete to ensure the 
security service components continue to update automatically.

Hardware and Software Requirements for Local Upgrade Servers

For downloading AsyncOS upgrade files, you must have a system in your internal network 
that has a web browser (see “Browser Requirements” on page 20) and Internet access to the 
IronPort Systems update servers. 

Note — If you need to configure a firewall setting to allow HTTP access to this address, you 
must configure it using the DNS name and not a specific IP address.

For hosting AsyncOS upgrade files, a server on the internal network must have a web server, 
such as Microsoft IIS (Internet Information Services) or the Apache open source server, which 
has the following features:

• Supports the display of directory or filenames in excess of 24 characters.

• Has directory browsing enabled.

• Is configured for anonymous (no authentication) or Basic (“simple”) authentication.

• Contains at least 350MB of free disk space for each AsyncOS upgrade image.

To edit the AsyncOS update and upgrade settings:

1. Navigate to the System Administration > Upgrade and Update Settings page, and click 

Edit Update Settings. The Edit Update Settings page is displayed.

Figure 22-22 on page 523 shows the options you can configure on the Edit Update 
Settings page.